Stone



FIG. 1 is a top view of the invention;

FIG. 2 is a right view of the invention;

FIG. 3 is a front view of the invention;

FIG. 4 is a left view of the invention;

FIG. 5 is a bottom view of the invention;

FIG. 6 is a rear view of the invention; and,

FIG. 7 is a perspective view of the invention. 

The ornamental design for an ornamental stone, as shown and described. 